| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 8 | |
| #2 | Austria | 6 | |
| #3 | Canada | 6 | |
| #4 | Switzerland | 5 | |
| #5 | United Kingdom | 2 | |
| #6 | Germany | 1 | |
| #7 | Spain | 1 | |
| #8 | France | 1 | |
| #9 | Greece | 1 | |
| #10 | Netherlands | 1 | |
| #11 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Swendsen Johan Walfred | 23 |
| #2 | Johan Walfred Swendsen | 5 |
| Publication | Filing date | Title |
|---|---|---|
| US2039199A | Device for regulating the air-gap between the stator and rotor in dynamo machines having annular elements | |
| CA298795A | Electric induction motor | |
| CA303783A | Induction motor | |
| CA314986A | Manufacture of magnetic cores for dynamos | |
| CA361960A | Induction motor | |
| CA303781A | Core for electric transformers | |
| CA303782A | Coil for electric transformers |